<template>
    <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
        <div>
            <img src="../assets/logo1.jpg" alt="图片加载中" width="60px" height="60px">
            <span>商品后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出登录</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
        <!-- 左侧边栏 -->
        <el-aside :width="isCollapse ? '64px':'200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <!-- 侧边栏菜单区域 -->
            <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition='false' router :default-active="activePath">
                <!-- 一级菜单 -->
                <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                    <!-- 一级菜单的模板区域 -->
                    <template slot="title">
                        <!-- 图标 -->
                    <i :class="iconsObj[item.id]"></i>
                    <!-- 文本 -->
                    <span>{{item.authName}}</span>
                    </template>

                    <!-- 二级菜单 -->
                    <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                        <template slot="title">
                        <!-- 图标 -->
                        <i class="el-icon-menu"></i>
                        <!-- 文本 -->
                        <span>{{subItem.authName}}</span>
                        </template>
                    </el-menu-item>
                </el-submenu>
            </el-menu>
        </el-aside>
        <!-- 右边主体 -->
        <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
        </el-main>
    </el-container>
    </el-container>
</template>

<script>
export default {
    data(){
        return{
            // 左侧菜单数据
            menulist:[],
            iconsObj:{
                '125':'el-icon-s-custom',
                '103':'el-icon-coin',
                '101':'el-icon-suitcase',
                '102':'el-icon-tickets',
                '145':'el-icon-data-line'
            },
            // 是否折叠
            isCollapse:false,
            // 别激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push('/login')
        },
        // 请求获取所有菜单数据
        async getMenuList(){
            const { data: res } = await this.$http.get("menus")
            if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
            // console.log(this.menulist)
        },
        // 点击按钮，切换菜单的折叠与展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse 
        },
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
    .el-header{
        padding-left: 0;
        background-color: #373D41;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #fff;
        font-size: 20px;
        div{
            display: flex;
            align-items: center;
            img{
                border-radius: 50%;
            }
            span{
                margin-left: 15px;
            }
        }
    }
    .el-aside{
        background-color: #333744;
        .el-menu{
            border-right: none;
        }
    }
    .el-main{
        background-color: #eaedf1;
    }

    .toggle-button{
        background-color: #4a5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2rem;
        cursor: pointer;
    }
</style>